Backyard astronomer Robert Holmes of Westfield, Illinois, is part of NASA's army of observers scanning the night sky for asteroids.

NASA Planetary Defense: Backyard Asteroid Observer

High-definition (HD) videos from NASA's Jet Propulsion Laboratory feature the latest news on space and science findings from JPL and NASA. Topics include discoveries made by spacecraft studying planets in our solar system, including Mars, Saturn and our home planet, Earth. Missions also study stars and galaxies in our universe.

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NASA Planetary Defense: Backyard Asteroid Observer

NASA Planetary Defense: Backyard Asteroid Observer

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